TestHFileBlock failing in Windows

[ramkrishna vasudevan <ra...@gmail.com>]

Running in my dev machine with windows TestHFileBlock keeps failing with
different errors
particularly the testConcurrentReading() testcase.

{code}
2014-07-22 16:34:21,782 ERROR [pool-4-thread-3]
hfile.TestHFileBlock$BlockReaderThread(641): Error in client reader_C
trying to read block at 475461, pread=true, withOnDiskSize=false
java.io.IOException: Invalid HFile block magic:
\x00\xF8\x013\x00\x00\x00\xF9
at org.apache.hadoop.hbase.io.hfile.BlockType.parse(BlockType.java:154)
at org.apache.hadoop.hbase.io.hfile.BlockType.read(BlockType.java:165)
at org.apache.hadoop.hbase.io.hfile.HFileBlock.<init>(HFileBlock.java:240)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderV2.readBlockDataInternal(HFileBlock.java:1502)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderV2.readBlockData(HFileBlock.java:1330)
at
org.apache.hadoop.hbase.io.hfile.TestHFileBlock$BlockReaderThread.call(TestHFileBlock.java:639)
at
org.apache.hadoop.hbase.io.hfile.TestHFileBlock$BlockReaderThread.call(TestHFileBlock.java:603)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
2014-07-22 16:34:21,784 ERROR [pool-4-thread-14]
hfile.TestHFileBlock$BlockReaderThread(641): Error in client reader_N
trying to read block at 1249519, pread=false, withOnDiskSize=false
java.io.IOException: Invalid HFile block magic: \x00}\x03)\x00\x00\x00~
at org.apache.hadoop.hbase.io.hfile.BlockType.parse(BlockType.java:154)
at org.apache.hadoop.hbase.io.hfile.BlockType.read(BlockType.java:165)
at org.apache.hadoop.hbase.io.hfile.HFileBlock.<init>(HFileBlock.java:240)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderV2.readBlockDataInternal(HFileBlock.java:1502)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderV2.readBlockData(HFileBlock.java:1330)
at
org.apache.hadoop.hbase.io.hfile.TestHFileBlock$BlockReaderThread.call(TestHFileBlock.java:639)
at
org.apache.hadoop.hbase.io.hfile.TestHFileBlock$BlockReaderThread.call(TestHFileBlock.java:603)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.j
{code}

But the same works in linux box.  I am not sure if it is an environment
issue. If the read in the test case happens with single thread then it
works fine.
I hit this issue while trying to make some changes and after having a clean
code without any changes still this test case keeps failing.  Not sure if
everyone is observing this.